8435420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{677}}^1$

素因数の和:782

約数の個数: 48

約数和(自身を含む): 20502720

約数和(自身を除く): 12067300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 140, 178, 356, 445, 623, 677, 890, 1246, 1354, 1780, 2492, 2708, 3115, 3385, 4739, 6230, 6770, 9478, 12460, 13540, 18956, 23695, 47390, 60253, 94780, 120506, 241012, 301265, 421771, 602530, 843542, 1205060, 1687084, 2108855, 4217710, 8435420]

約数ペア:

[(1, 8435420), (2, 4217710), (4, 2108855), (5, 1687084), (7, 1205060), (10, 843542), (14, 602530), (20, 421771), (28, 301265), (35, 241012), (70, 120506), (89, 94780), (140, 60253), (178, 47390), (356, 23695), (445, 18956), (623, 13540), (677, 12460), (890, 9478), (1246, 6770), (1354, 6230), (1780, 4739), (2492, 3385), (2708, 3115)]